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  #16  
Old 04-02-2003, 01:29 AM
lrg lrg is offline
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Are you loosing any coolant? Another possibility is that you have a head gasket problem that is allowing some coolant to make its way into the exhaust giving you the white "smoke". This might also cause a low compression reading too. If its only a head gasket problem then I'd definitely want to try to save the engine.
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  #17  
Old 04-02-2003, 01:24 PM
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White smoke can also be the result of incorrect injection timing. Look up a search on injection timing. I think it can be the result of late timing.
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  #18  
Old 04-02-2003, 01:26 PM
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Or course with the timing off, it wouldn't run like "stink" as you describe.....
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  #19  
Old 04-02-2003, 02:16 PM
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White smoke can be fuel or water, black is usually excess fuel, and blue is definitely oil. The rough idle could be valve adjustment or simply in need of diesel purge. Blue smoke could be valve seals or a failing turbo seal, possibly rings but doubtful. Is the smoke only at idle, only at full throttle, or just all the time regardless of RPM or load?
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  #20  
Old 04-02-2003, 04:42 PM
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Jim- yes there is definitely too much smoke coming out of the tail pipe. It failed emission testing, and Iím told emission testing for diesels is usually a piece of cake to pass. Redoing the compression testing is made a little difficult by the fact that we do not have the car insured, it is just being stored in a hangar. Maybe I can find a mobile unit :-). gsxr, the smoking is the worst at idle. Still there with load, but not as bad.

Irg, the suggestion of a coolant leak seems to kind of fit with itís Ďall of the suddení nature, but wouldnít the oil in the crankcase look milky if that was the problem?

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I am sure that you are finding it much more helpful and friendly than MBCanda.com
Hmm, 123c I think there must be a story there. Thank you for the kind invitation to the get together. It does sound like something I wouldnít mind attending. However, crossing the border is only slightly less painful than a root canal these days. But Iíve always been a little sensitive to long lineups, submitting DNA samples and having a full body cavity search. :-) Necessary inconveniences, I know, but itís not exactly encouraging. My husband even thinks heíll miss the Arlington airshow this year (which will be a first!).
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  #21  
Old 04-02-2003, 04:52 PM
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Originally posted by jassz
Hmm, 123c I think there must be a story there. Thank you for the kind invitation to the get together. It does sound like something I wouldnít mind attending. However, crossing the border is only slightly less painful than a root canal these days. But Iíve always been a little sensitive to long lineups, submitting DNA samples and having a full body cavity search. :-) Necessary inconveniences, I know, but itís not exactly encouraging. My husband even thinks heíll miss the Arlington airshow this year (which will be a first!).
Yes there is a story with MBCanada, but I won't get into here . There is are several other threads that get into it

If it makes you feel any better, there are going to be several others from B.C. attending the get together.
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  #22  
Old 04-02-2003, 04:59 PM
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I'm guessing something with the head gasket, turbocharger, or valve seals for the smoking problem. And no, a failed gasket does not always result in oil & coolant mixing. You may need to yank the head for inspection. I still think it's likely the engine can be repaired inexpensively (I doubt the bottom end is shot, which is the only thing that would cost a lot to repair).

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Dave M.
Boise, ID

1997 E420 - 153kmi (Bugeyes)
1994 E420 - 140kmi (Blondie)
1993 500E - 193kmi (Lollipop)
1992 400E - 186kmi (Stinky Dirty)
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  #23  
Old 04-02-2003, 11:58 PM
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So, in summary we have 'narrowed' it down to:
-valve adjustment
-valve seals
-problems resulting from missing an elbow joint
- a diaphragm failure at the vaccuum pump (gee I hope MY diaphragm doesn't fail! )
-a blown head gasket
-incorrect injection timing
-a problem with the turbo charger

:p :p

Okay, lets see if this helps diagnose the problem. These are the compression testing readings that the previous owner got from his mechanic:
1- 271
2- 238
3- 294
4- 264
5- 235

I don't have any information on how correctly this test was done.

We're going to start with a valve adjustment, since it's the easiest and probably needs to be done anyway.
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  #24  
Old 04-03-2003, 12:03 AM
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Excellent idea. I'd do the valve adjust (remember to check timing chain stretch while you're in there!), then re-do the compression test HOT. The numbers you posted are terrible, but if the valves are all out of spec and/or those are cold numbers, they're basically meaningless. Let us know what you find out.

(and keep an eye on that diaphragm! )
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Dave M.
Boise, ID

1997 E420 - 153kmi (Bugeyes)
1994 E420 - 140kmi (Blondie)
1993 500E - 193kmi (Lollipop)
1992 400E - 186kmi (Stinky Dirty)
Check out my website photos, documents, and movies!
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